Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966053AbbLQMYY (ORCPT ); Thu, 17 Dec 2015 07:24:24 -0500 Received: from mx4-phx2.redhat.com ([209.132.183.25]:46969 "EHLO mx4-phx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932389AbbLQMYX (ORCPT ); Thu, 17 Dec 2015 07:24:23 -0500 Date: Thu, 17 Dec 2015 07:24:13 -0500 (EST) From: Jan Stancek To: Jiri Olsa , xiakaixu Cc: adrian hunter , Arnaldo Carvalho de Melo , Ingo Molnar , masami hiramatsu pt , linux-kernel@vger.kernel.org, "Wangnan (F)" Message-ID: <1065837169.29712806.1450355053836.JavaMail.zimbra@redhat.com> In-Reply-To: <20151217120926.GA15303@krava.brq.redhat.com> References: <56729F77.20404@huawei.com> <20151217120926.GA15303@krava.brq.redhat.com> Subject: Re: [BUG] perf test 21("Test object code reading") failure on ARM64 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Originating-IP: [10.34.26.57] X-Mailer: Zimbra 8.0.6_GA_5922 (ZimbraWebClient - FF42 (Win)/8.0.6_GA_5922) Thread-Topic: perf test 21("Test object code reading") failure on ARM64 Thread-Index: 2pNSmbyIkdPAZrDM8brA5TZdAg5rmA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6635 Lines: 171 ----- Original Message ----- > From: "Jiri Olsa" > To: "xiakaixu" > Cc: "adrian hunter" , "Arnaldo Carvalho de Melo" , "Ingo Molnar" > , "masami hiramatsu pt" , linux-kernel@vger.kernel.org, "Wangnan > (F)" , "Jan Stancek" > Sent: Thursday, 17 December, 2015 1:09:26 PM > Subject: Re: [BUG] perf test 21("Test object code reading") failure on ARM64 > > adding Jan Stancek to the loop > > jirka > > On Thu, Dec 17, 2015 at 07:41:43PM +0800, xiakaixu wrote: > > Hi, > > > > Perf test "Test object code reading" failed on ARM64 board and the test log > > is here. > > > > ###################################################################################### > > # perf test -v 21 > > ... > > File is: /tmp/oxygen_root-root/lib64/libc-2.19-2014.08.so > > On file address is: 0x70c3c > > Objdump command is: objdump -z -d --start-address=0x70c3c > > --stop-address=0x70cbc /tmp/oxygen_root-root/lib64/libc-2.19-2014.08.so > > objdump read too few bytes > > Bytes read differ from those read by objdump > > buf1 (dso): > > 0x16 0x58 0x41 0xb9 0xf6 0x0e 0x00 0x35 0x00 0x00 0x00 0x90 0xbf 0x27 > > 0x00 0xf9 > > 0x00 0x40 0x22 0x91 0xa0 0x23 0x00 0xf9 0xb4 0x06 0x00 0xf0 0x55 0xd0 > > 0x3b 0xd5 > > 0x80 0xe2 0x14 0x91 0xb5 0xc2 0x1b 0xd1 0x00 0x60 0x00 0x91 0x01 0x04 > > 0x40 0xf9 > > 0x3f 0x00 0x15 0xeb 0xc0 0x01 0x00 0x54 0xbf 0x3f 0x00 0xb9 0x21 0x00 > > 0x80 0x52 > > 0x02 0xfc 0x5f 0x88 0x5f 0x00 0x1f 0x6b 0x61 0x00 0x00 0x54 0x01 0x7c > > 0x03 0x88 > > 0x83 0xff 0xff 0x35 0x40 0x00 0x00 0x54 0xa2 0x3f 0x00 0xb9 0xa0 0x3f > > 0x40 0xb9 > > 0xc0 0x0f 0x00 0x35 0x80 0xe2 0x14 0x91 0x15 0x10 0x00 0xf9 0x80 0xe2 > > 0x14 0x91 > > 0x62 0x02 0x40 0xb9 0x44 0x00 0x11 0x12 0x01 0x1c 0x40 0xb9 0x13 0x08 > > 0x00 0xf9 > > > > buf2 (objdump): > > 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 > > 0x00 0x00 > > 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 > > 0x00 0x00 > > 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 > > 0x00 0x00 > > 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 > > 0x00 0x00 > > 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 > > 0x00 0x00 > > 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 > > 0x00 0x00 > > 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 > > 0x00 0x00 > > 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 > > 0x00 0x00 > > > > test child finished with -1 > > ---- end ---- > > Test object code reading: FAILED! > > ###################################################################################### > > > > The result of objdump on ARM64 like this: > > ... > > 70c40: 35000ef6 cbnz w22, 70e1c <_IO_link_in+0x208> > > 70c44: 90000000 adrp x0, 70000 <_IO_file_fopen+0x164> > > 70c48: f90027bf str xzr, [x29,#72] > > 70c4c: 91224000 add x0, x0, #0x890 > > 70c50: f90023a0 str x0, [x29,#64] > > 70c54: f00006b4 adrp x20, 147000 <__abort_msg+0x588> > > ... Hi, What is your objdump version? > > > > So the following patch is needed. > > diff --git a/tools/perf/tests/code-reading.c > > b/tools/perf/tests/code-reading.c > > index a767a64..1b55fa0 100644 > > --- a/tools/perf/tests/code-reading.c > > +++ b/tools/perf/tests/code-reading.c > > @@ -61,9 +61,6 @@ static size_t read_objdump_line(const char *line, size_t > > line_len, void *buf, > > if (i >= line_len || !isxdigit(line[i])) > > break; > > c2 = line[i++]; > > - /* Followed by a space */ > > - if (i < line_len && line[i] && !isspace(line[i])) > > - break; > > /* Store byte */ > > *(unsigned char *)buf = (hex(c1) << 4) | hex(c2); > > buf += 1; > > > > After applying this patch, the test still failed. > > ###################################################################################### > > ... > > Objdump command is: objdump -z -d --start-address=0x7c4c4 > > --stop-address=0x7c544 /tmp/oxygen_root-root/lib64/libc-2.19-2014.08.so > > Bytes read differ from those read by objdump > > buf1 (dso): > > 0x00 0x00 0x80 0xd2 0xd5 0xff 0xff 0x17 0xe0 0x03 0x19 0xaa 0xd3 0xff > > 0xff 0x17 > > 0xe1 0x03 0x14 0xaa 0xa2 0x63 0x02 0x91 0xe0 0x03 0x13 0xaa 0x66 0xfe > > 0xff 0x97 > > 0xfc 0x03 0x00 0xaa 0xa0 0x4f 0x40 0xf9 0xe2 0x03 0x1c 0xaa 0xe1 0x03 > > 0x00 0xaa > > 0x08 0x00 0x67 0x9e 0x61 0x02 0x01 0x8b 0xe0 0x03 0x13 0xaa 0x60 0x01 > > 0x00 0x94 > > 0xe0 0xf9 0xff 0x35 0x95 0x07 0x00 0xd1 0x1b 0x00 0x80 0xd2 0x01 0x01 > > 0x66 0x9e > > 0x60 0x02 0x15 0x8b 0x17 0x00 0x1c 0xcb 0xf8 0x03 0x1b 0xaa 0x0a 0x00 > > 0x67 0x9e > > 0x20 0x00 0x80 0xd2 0x00 0x00 0x1c 0xcb 0x81 0x02 0x01 0xcb 0x09 0x00 > > 0x67 0x9e > > 0x2b 0x00 0x67 0x9e 0x16 0x03 0x14 0x8b 0x20 0x03 0x1a 0x8b 0x01 0x00 > > 0x80 0x52 > > > > buf2 (objdump): > > 0xd2 0x80 0x00 0x00 0x17 0xff 0xff 0xd5 0xaa 0x19 0x03 0xe0 0x17 0xff > > 0xff 0xd3 > > 0xaa 0x14 0x03 0xe1 0x91 0x02 0x63 0xa2 0xaa 0x13 0x03 0xe0 0x97 0xff > > 0xfe 0x66 > > 0xaa 0x00 0x03 0xfc 0xf9 0x40 0x4f 0xa0 0xaa 0x1c 0x03 0xe2 0xaa 0x00 > > 0x03 0xe1 > > 0x9e 0x67 0x00 0x08 0x8b 0x01 0x02 0x61 0xaa 0x13 0x03 0xe0 0x94 0x00 > > 0x01 0x60 > > 0x35 0xff 0xf9 0xe0 0xd1 0x00 0x07 0x95 0xd2 0x80 0x00 0x1b 0x9e 0x66 > > 0x01 0x01 > > 0x8b 0x15 0x02 0x60 0xcb 0x1c 0x00 0x17 0xaa 0x1b 0x03 0xf8 0x9e 0x67 > > 0x00 0x0a > > 0xd2 0x80 0x00 0x20 0xcb 0x1c 0x00 0x00 0xcb 0x01 0x02 0x81 0x9e 0x67 > > 0x00 0x09 > > 0x9e 0x67 0x00 0x2b 0x8b 0x14 0x03 0x16 0x8b 0x1a 0x03 0x20 0x52 0x80 > > 0x00 0x01 The data appears to match, but the endian is different. Regards, Jan > > > > test child finished with -1 > > ---- end ---- > > Test object code reading: FAILED! > > ###################################################################################### > > > > Seems the dso file format is different between x86 and ARM64. > > Maybe this test case only works fine on x86. > > -- > > Regards > > Kaixu Xia > > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/